SOHC.co.uk Forums > CB500/550

Reprofiled camshaft

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DomP:
Before I complete my engine rebuild I want to make sure I'm not missing a trick by getting my cam reprofiled, is it worth circa £180 to have it done or will I not notice the difference?  (in reality I won't as I've not ridden this bike yet) 

Will it change the sound of the bike at all?

Oddjob:
AFAIK it's about £100-£120 plus VAT plus delivery or was in 2022.

If you get the right profile you should notice a difference, you don't want the engine to become cammy, it needs to be just a gentle re-profile.

Shouldn't change the sound no.

Detecting the difference may be hard if you don't know the baseline of the engines performance. Maybe find a cam that needs work rather than getting a good one done. Try the standard and then fit the re-profiled one after you get used to what it is like standard. If you prefer the new profile sell the old standard one.

DomP:
Sounds good enough reasons to leave it as is to me then Ken.

Johnwebley:
I had a spare cam reprofiled by Newmans

Asked for fast road work,

There is a difference

But you will need to in 6 to 9k rpm to get the real benefits ,

It does help the motor breathe better

Maybe even give more pull in midrange

Cost about £180

The time was long, as they had a  machine down,

Hopefully everything should be OK  now

Can't tell any changes in noise/sound

Tickover still the same



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SteveW:
Check this out:

http://www.chinonthetank.com/2016/05/cb650-cam-in-a-cb550/

This is what I’m currently doing.

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